Q. A 71-year-old man patient with a smoking history presents to the clinic for a routine health screening. The patient states that he has lost 15 lbs over the past month. On physical examination, wheezes are audible in the left lower lobe and decreased breath sounds. He has no other significant past medical history. His labs reveal a hemoglobin of 13.5 g/dL, white blood cell count of 8,200/micro-liter, platelets 230,000/micro-liter, and serum creatinine of 1.2 mg/dL. Chest x-ray shows a 1.5 cm mass in the left lower lobe, and a chest CT scan shows a 1.7 cm non-calcified mass in the left lower lobe with no evident lymphadenopathy. A biopsy of the mass is recommended. What is the most appropriate next step in the management of this patient?